H-bridge circuit with bootstrap capacitor gate drive charging circuit

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12261517
APP PUB NO 20230078379A1
SERIAL NO

17942806

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A bootstrap gate driver charging circuit arranged to drive the gate of an upper switch (QU) and a lower switch (QL) connected in series to provide an AC output voltage (400) voltage by alternatively turning on and off according to a predetermined duty cycle of alternate upper switch turn-on and lower switch turn-on phases, the bootstrap gate driver charging circuit comprising: an input terminal; an output terminal; an H-bridge inverter with an inverter input and an inverter output; a charging path; and a bootstrap capacitor. The input inverter is electrically connected to the input terminal, the inverter output is electrically connected to a first end of the bootstrap capacitor, the charging path is electrically connected between a second end of the bootstrap capacitor and a gate driver supply voltage; wherein in response to the lower switch being turned ON and providing a path to ground with respect to the supply voltage.

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Patent Owner(s)

Patent OwnerAddress
HAMILTON SUNDSTRAND CORPORATIONFOUR COLISEUM CENTRE 2730 WEST TYVOLA ROAD CHARLOTTE NC 28217

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fernandez-Mattos, Rodrigo West Midlands, GB 18 7
Kulsangcharoen, Ponggorn West Midlands, GB 13 8
Roadley-Battin, Jonathan Birmingham, GB 4 0

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